Ventilating device, including ventilating louvers



A. J. WEAVER 2,771,835

ENTILATING DEVICE, INCLUDING VENTILATING LOUVERS Nov. 27, 1956 Filed March 30, 1954 .15.. J Wave INVENTOR ATTORNEYS United States Patent VENTILATING DEVICE, INCLUDING VENTILATING LOUVERS Albert J. Weaver, San Antonio, Tex.

Application March 30, 1954, Serial No. 419,861

2 Claims. (CI. 98-95) This invention relates to a ventilating device designed for ventilating attics or similar areas.

An important object of the invention is to provide a ventilating device comprising a frame adapted to be secured within an opening of a building wall, the frame providing a support for spaced stationary louvers and pivoted baflies controlled by the action of wind pressure thereagainst, for closing the spaces between said louvers to exclude the elements during severe stormy weather.

A further object of the invention is to provide an air channel at the bottom of the ventilator for causing a circulation of air to pass along the bottom of the ventilator, maintaining the ventilator free of foreign matter that otherwise collects in the bottom of the ventilator to impair the efliciency of the ventilator.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing:

Figure l is a rear elevational view of a ventilator constructed in accordance with the invention.

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a sectional view taken on line 33 of Fig. 2.

Fig. 4 is a perspective view of one of the hinged bafiles.

Referring to the drawing in detail, the ventilating device forming the subject matter of the present invention, embodies a frame including side walls 5 which are connected to the bottom 6 at their lower ends, and a top 7 at their upper ends.

The side walls 5 are substantially triangular in shape with the wide portion of the device at the bottom, while the top 7 is comparatively narrow.

Secured between the side walls 5 of the frame, are louvers which are arranged in superposed spaced relation with respect to each other, each louver comprising a horizontal section 8 and a downwardly inclined end section 9 extended towards the front of the frame.

Because of the substantially triangular shape of the frame, it will be obvious that the louvers will be graduated in size from the bottom to the top of the frame, as better shown by Fig. 2 of the drawing.

The inner ends of the horizontal sections of the louvers are extended laterally at 10 providing stops against which the pivoted baflles 11 engage, should the battles 11 swing too far inwardly when returning to their normal positions.

These bafiles 11 are arranged in spaced relation with respect to each other and are pivotally connected between the side walls 5 of the frame, the pivot points of the baffles being so disposed that the baflles will swing downice wardly to substantially vertical positions as shown by Fig. 2, under normal wind pressure conditions.

As shown, the lower ends of the battles are extended laterally at 12 providing inclined ends which are so disposed that under excessive wind pressure against the baflles in one direction the baffles will swing towards the inner end 10, the ends 12 thereof contacting the portions 10, restricting movement of the baffles inwardly too far.

These laterally extended portions 12 of the bafHes 11 are formed with aligning openings, in which the rod 13 is positioned, the rod 13 connecting the baffies so that they will move in unison.

Extending along the bottom of the frame in spaced relation with the bottom, is a plate or sub-bottom 14 which has its inner end curved upwardly at 15, providing a lower passageway 16 open at its ends, to cause a circulation of air through the channel to maintain the bottom of the ventilator frame clear of snow or sand accumulations which would otherwise impair the efficiency of the ventilator.

As shown by Fig. 2, the forward end of the plate or sub-bottom 14 is turned downwardly at 17 to guard the forward end of the channel and prevent back pressure through the channel 16 towards the front of the ventilator to defeat the purpose of the channel.

As shown, the frame is formed with a laterally extended flange 18 providing means for securing the ventilator to a supporting surface. In addition, the ventilator is provided with a supporting bracket 19 extending along the bottom of the ventilator.

In the operation of the device, the ventilator is positioned in an opening of a building wall or window, with the open side of the ventilator disposed outwardly.

Under normal conditions, air will pass inwardly in the direction of the arrows in Fig. 2 of the drawing, the air passing upwardly between the vertical baffles.

Under excessive air pressure, it is obvious that the baffles 11 will be moved rearwardly to the positions shown in dotted lines in Fig. 2 of the drawing, with the result that the spaces between the louvers of the ventilator will be closed against air and the elements, passing into the room area ventilated by the device.

It is obvious that when the excessive wind pressure subsides, the baifles will swing downwardly to their vertical positions as shown in full lines in Fig. 2 and the ventilator will continue to emit air to the room area ventilated by the device.

Having thus described the invention, what is claimed is:

1. A ventilator for mounting in an opening comprising a pair of vertical side walls of substantially triangular configuration with one edge substantially vertical and the other edges obliquely disposed, one of said other edges being a lower short edge inclined downwardly and outwardly toward said vertical edge, a downwardly and outwardly inclined bottom wall secured between said side walls, the inner end of said bottom wall being upwardly curved, a plurality of louvers fixed between said side walls, each louver being formed of a horizontal.

intermediate portion, a downwardly and outwardly inclined outer portion and a downwardly and inwardly inclined inner portion, said inner portion constituting a baffle stop, a plurality of battles between said side walls, means swingably securing each bafile between said side walls in horizontally and vertically spaced relation from the means swingably securing the next adjacent baffle, each bafile including an obtusely angled lower edge, a connecting rod loosely extending through said lower edges of said bafiles, the width of each baflle being greater than the space between adjacent baffle-s whereby the lower edge of one baffle will overlap the upper portion of an adjacent battle in the closed positions of said baffles, and an inner bottom wall fixed between said side walls and spaced upwardly from said first named bottom wall and forming a return duct with said first named bottom wall, said bafiles in the vertical open position thereof substantially bearing against said stops, excessive wind pressure flowing inwardly through said louvers elfecting upward and inward swinging of said baflles to overlapping closed position.

2. A ventilator for mounting in an opening comprising a pair of vertical side walls, a downwardly and outwardly inclined lower bottom wall fixed between said side wall, a plurality of vertically spaced apart louvers fixed between said side walls, an inner bottom Wall fixed between said side walls below said louvres and forming with said lower bottom Wall an air duct, a plurality of battles pivotally disposed between said side walls inwardly of the inner ends of said louvres, means swingably securing each baffle References Cited in the file of this patent UNITED STATES PATENTS 1,408,411 Caldwell Mar. 7, 1922 1,672,291 Williams .Tune 5, 1928 2,069,370 Johnson Feb. 2, 1937 2.326,408 Strawsine Aug. 10, 1943 2,526,770 Pledger Oct. 24, 1950 2,595,885 Rhoades May 6, 1952 

